Rapid releasable coupling



March 7, 1950 F. e. G. ARMSTRONG RAPID RELEASABLE COUPLING Filed Feb. 21, 1947 Inventor 3 'fw zewlal gjmm Patented Mar. 7, 1950 2,499,712 RAPID RELEASABLE COUPLING Fullerton George Gordo near Dorchester,

Application February In Great Britain N Section 1, Publi n Armstrong, England 1947, Serial No. 730,073 ovember 14, 1941 Law 690, August 8, 1946 Patent expires November 14, 1961 2 Claims.

fingers.

In devices of this type where the fingers are pivot lly mounted on a plunger and are held uncoupling.

According to the ;pring controlled sl 0 the central elem The invention is Fig. 1 is a sectional elevation showing the deice partly in section with the parts in the lockig position,

Fig. 2 is a corresponding view 1 the unlocked position.

The coupling consists of t hell with the parts wo components, one

ant 5 and have st thin the socket l.

The upper end of the slot in the central els sleeve, a centr ment 5 is bevelled, as shown at M to restrict beyond the position ressed plunger I 5 is the central element 5 of the pawls 9, ID, to rrect position for reashas been released, as

disposed centrally within bearing on the top end maintain these in the co sembly after the device shown in Fig. 2.

In order to release the coupling, sleeve 6 will be drawn up relatively to ponent 3, against the spring 1, thus allowing the pawls to come into the position shown in Fig. 2.

I declare that what I claim is:

1. A component for a rapid releasable coupling consisting of a spring controlled outer sleeve, a central element movable relatively to said sleeve, a pair of fingers pivoted to said element, a shoulder on each finger, and a central spring pressed plunger engaging the top of said fingers to hold these in correct position for re-assembly when the said sleeve is withdrawn against its spring relatively to the element carrying the fingers.

2. A rapid releasable coupling consisting of a first part formed of a spring controlled outer al element movable relatively within d bifurcated at its lower end to proportion the inner end of which is r of fingers pivoted to said central n said slotted portion, a stop should of each finger, a cam shaped pawl ite end of each finger co-operating elled inner end of the slotted porcentral element, a central spring er engaging the cam shaped pawl ngers to hold these in correct posiembly when the said sleeve is witht its spring relative to the central ying the fingers, and a second part comprising a recessed socket, an inwardly directed annular flange forming part of and defining the upper wall of said socket to receive the stop shoulders of the said fingers in locked relationship therewith, the inner edge of said flange engaging the sides of the fingers to turn them about the pivots when said socket part is displaced axially relative to and toward said first part until the cam shaped pawls engage Within the end of the spring controlled outer sleeve and the stop shoulders are lockingly accommodated beneath the annular flange of the recessed socket.

FULLERTON GEORGE GORDON ARMSTRONG.

the outer the comsaid sleeve an vide a slotted bevelled, a pai element withi der on one en on the oppos with the bev tion of said pressed plung ends of said fi tion for re-ass drawn agains element carr No references cited. 

